Musk has kept mum on most other details pertaining to the upcoming vehicle, but he has talked generally about features coming to future Tesla vehicles and has talked a lot about the Model Y's sister vehicle, the Model 3.

Based on his comments, we pulled together a list of some of the features we'll likely see in Tesla's Model Y.

The Model Y will transform Tesla's manufacturing process.

During Tesla's first quarter earnings call, Musk said that the company would make significant automation improvements to its production line with the Model 3, but the Model Y is where the manufacturing process will really become

"With the Model 3, I think we will be roughly comparable with the best high-volume vehicle production lines in the world. Better in some respects, a little worse in others, but roughly comparable," Musk said.

"Then where things will really be a step change beyond any other auto manufacturer will be the Model Y factory. And this is both a function of designing the product to be easy to manufacture and easy to automate as well as designing the factory itself. So Model Y is where I think it really becomes a step change," he said.

Tesla has been investing heavily in automating its manufacturing process.

In November, the automaker announced it was acquiring Grohmann Engineering, a German engineering company that specializes in making automated manufacturing systems.

At the time, Musk said Tesla's factories would become increasingly more important as the company grows its production volume.

"As the machine that builds the machine, our factories are so important that we believe they will ultimately deserve an order of magnitude more attention in engineering than what they produce. At very high production volumes, the factory becomes more of a product than the product itself," Musk said in a statement.

It may have Falcon-wing doors.

Tesla CEO Elon Musk demonstrates the falcon-wing doors on the new Tesla Model X on September 29, 2015.Justin Sullivan/Getty Images

In a response to a Twitter follower asking if the Model 3 crossover will have falcon-wing doors, Musk said that "there will be a Model 3 and a Model Y. One of the two will."

Musk later deleted the tweet.

It's worth noting that Musk revealed a prototype of the Model 3 in March and that car did not have falcon-wing doors, so perhaps they will show up on the Model Y, at least as an option.

A solar roof could also be an option.

Tesla Model 3Tesla Motors

In November 2016, Musk said via Twitter that Tesla would likely begin to include solar roofs as an option for its cars. Musk didn't share a specific timeline of when to expect the feature, but he did say that it "would probably be an option" on the Model 3. He also said in a follow-up tweet that it wouldn't be too expensive.

Musk has been hinting at the possibility of Tesla building cars with solar roofs for some time.

After the unveiling of Tesla's solar glass shingles in late October, Musk tweeted that the same glass technology could be used on the roof of a car. Musk said that its solar glass for cars would be net positive, meaning that it would create more energy than it used to power certain vehicle features, like defrosters.

Given that Musk said a solar-roof option will likely be available for the Model 3, it's likely we'll see it either come standard or as an option on the Model Y.

A heads-up display may be another optional feature.

A heads-up display shows the driver vital data, like navigation information and speed limits, directly on the windshield in front of the driver.

While Tesla doesn't offer a heads-up display on any of its vehicles (unlike other premium car makers), it's speculated that the Model 3 may come equipped with one.

Tesla has not yet revealed what the Model 3 dashboard and instrument panel will look like, but in April, Musk said via Twitter that the Model 3 will have a steering system that "feels like a spaceship."

While it's not yet clear if this means that the Model 3 will have a heads-up display, it's likely that by the time Tesla launches the Model Y it will at least offer the option of a heads-up display.

However, it's still not clear yet when Tesla will actually enable full autonomy on its cars for customers. The company states on its website that this will depend on software validation and regulatory approval, which will vary by geographic location.

When the Model Y comes out in 2019 or 2020, we can almost certainly expect it to be equipped with the updated hardware. What's more, Tesla may have done enough software validation by then that customers in some parts of the world may even be able to take advantage of the fully autonomous system.

It will likely have a range of at least 238 miles per charge.

REUTERS/Robert Galbraith

We haven't heard any details about the Model Y's range just yet, but considering GM's all-electric Chevy Bolt SUV just launched with a range of 238 miles per charge, it's likely the Model Y will have a competitive range.

Tesla's Model 3 will have a base range of 215 miles, but Tesla will offer battery options like it does with the Model S and Model X to increase the range per charge.

Expect more cargo space.

Tesla's premium SUV, the Model X, has spacious seating, but when it first launched it was a little tight on cargo space. That's because the second row of seats didn't fold down.

In November 2016, though, Tesla began offering a configuration that allows the second-row seats in a five-seat Model X to fold down, providing 88 cubic feet of interior cargo storage.

Musk made sure not to make the same mistake regarding utility with the Model 3. At its reveal, Musk said that drivers will be able to fit a seven-foot surfboard in the vehicle and hinted that the back seats will fold down.

Given the problems Tesla had with cargo space in the Model X at the launch and its focus on cargo in the Model 3, it's likely we'll see lots of interior storage in the Model Y.

The Model Y should also come with a more affordable price tag.

REUTERS/Hannibal Hanschke

Tesla has not shared a price range for its upcoming compact SUV. However, given it already sells a luxury SUV, the Model X, and that the company wants to target the mass market, it's likely the upcoming SUV will have a more competitive price tag.

Also, considering General Motors already sells its all-electric SUV crossover, the Chevy Bolt, for $37,500 before tax incentives, it would make sense for Tesla to price the Model Y in the same ballpark.

However, there's always the possibility that Tesla could make the Model Y a cheaper version of the Model X, similar to the BMW X3, which begins pricing at about $40,000.

The Model Y will be key for Tesla to produce 1 million cars by 2020.

During Tesla's recent earnings call, Musk was asked if he still thought that the company could produce one million vehicles by 2020. Musk said that he did still think Tesla could hit that ambitious target, but only with the addition of the Model Y to its lineup.

"I think we need to come out with the Model Y sometime in 2020 or aspirationally late 2019 and then I think a million units is quite likely, maybe more," Musk said.